GNOME Thumbnail Cleaner or thumbnail-cleaner is an open source and completely free command-line application written in Python and designed to offer users an easy way to clean obsolete thumbnails from their system.

The GNOME Thumbnail Cleaner application, which is actually a single .py file, will scan and remove all outdated thumbnails from your Home folder, generated by Nautilus (Files).

Being originally designed for the GNOME desktop environment, the application can also be executed on any other desktop environment if its requirements are installed.

The application can run in a GTK window, or directly from the command-line.